锻压技术

半轴套管多工位挤压自动化生产线中冲连皮缺陷产生机理及参数优化

英文标题：Mechanism of punching slug adhesion and parameter optimization in automatic production line for half shaft bushing multi-station extrusion

作者：李硕徐春国郭永强乔健

单位：北京机电研究所有限公司

关键词：半轴套管自动化生产线挤压连皮粘连加热温差

分类号：TG376.2

出版年,卷(期):页码：2020,45(4):87-92

摘要：

针对半轴套管多工位热挤压自动化生产线工艺调试过程中，正挤压工序冲连皮时，管端易出现连皮粘连缺陷的问题，探讨了有可能造成连皮粘连的原因。通过对工艺流程和现场情况进行综合分析，提出了圆柱形坯料周向温度加热不均是关键的影响因素。采用Deform有限元分析软件，模拟了不同加热温差条件下，反挤压和冲连皮时材料变形及材料剪断过程。通过对模拟结果的分析，揭示了连皮粘连机理，并可知，当坯料周向加热温差小于30 ℃时，连皮可顺利冲下。根据模拟得出的合理温差，进行现场试验，实际情况与模拟结果具有较高的一致性，生产出的产品锻件切口平齐、连皮撕裂带分布均匀，有效地解决了连皮粘连的问题。

During the technology adjustment process of automatic production line for half shaft bushing with multi-station hot extrusion, punching slug adhesion defect appeared in the tube end during the forward extrusion process. The possible causes of slug adhesion were explored. Through a comprehensive analysis of process flow and on-site conditions, it was proposed that the uneven circumferential heating temperature of cylindrical billet was the key influencing factor. Finite element analysis software Deform was used to simulate the deformation and shearing process of materials in backward extrusion and slug punching under different heating temperature conditions. Through the analysis of simulation results, the mechanism of slug adhesion was revealed, and it was concluded that the slug could be washed down smoothly when the circumferential heating temperature difference of billet was less than 30 ℃.According to the reasonable temperature difference obtained by the simulation, the field test shows that the actual situation is consistent with the simulation result. The incisions of product forging were even, and the slug tearing zone is evenly distributed, which effectively solves the problem of slug adhesion.

基金项目：

李硕（1993-），男，硕士研究生 E-mail：957729591@qq.com 通讯作者：徐春国（1970-），男，博士，研究员 E-mail：13910082751@163.com

参考文献：

[1]张成波. 1141重型货车驱动桥桥壳轻量化研究[D]. 武汉：武汉理工大学, 2010.

Zhang C B. Study on 1141 Lightweight Housing of Drive Axle of Heavy Truck[D]. Wuhan: Wuhan University of Technology,2010.

[2]李欣. 重型货车驱动桥桥壳结构分析及其轻量化研究[D]. 武汉：武汉理工大学, 2006.

Li X. Structural Analysis and Lightweight Research of Heavy Truck Drive Axle Housing[D]. Wuhan: Wuhan University of Technology,2006.

[3]夏华, 胡亚民, 雷登峰. 关于国内外半轴套管的精密成形[J]. 金属加工：热加工, 2005,(3):73-76.

Xia H, Hu Y M, Lei D F. The precision forming of half-axle sleeve at home and abroad[J].MW Metal Forming,2005,(3):73-76.

[4]Bradley S W, Bradley W L. Analysis of failure of axle housing of crane truck with fracture mechanics[J]. Engineering Failure Analysis, 1995, 2(4):233-246.

[5]胡亚民. 半轴套管的精锻成形[J]. 锻压装备与制造技术, 2005,(2):62-69.

Hu Y M. Precision forging of half-axle sleeve tube[J].China Metalforming Equipment & Manufacturing Technology,2005,(2):62-69.

[6]李硕, 徐春国, 郭永强,等. 半轴套管多工位挤压自动化生产线关键技术研究[A].第十六届全国塑性工程学术年会[C].太原，2019.

Li S, Xu C G, Guo Y Q, et al. Research on key technology of semi-axle sleeve multi-station extrusion automation production line[A]. 16th National Conference on Technology of Plasticity[C].Taiyuan,2019.

[7]王晓波. 热压杯形件壁厚差的技术分析[J]. 模具工业,2000,(3):49-51.

Wang X B. Technological analysis of the wall-thickness difference of the hot-extruded cup-shaped part[J].Die & Mould Industry, 2000,(3):49-51.

[8]马玉婷. 工程机械半轴套管热挤压工艺及装备研究[D]. 济南：山东大学, 2011.

Ma Y T. The Research on Hot Extrusion Techniques and Equipment for Axle-shaft Sleeve of Engineering Machinery[D]. Jinan: Shandong University,2011.

[9]任广升, 徐春国. 半轴套管快捷精密挤压成形新工艺[P]. 中国:CN1672863A, 2005.

Ren G S,Xu C G. A new process for fast and precise extrusion of half-axle sleeve[P]. China: CN1672863A， 2005.

[10]张传海. 长轴深孔件热挤压工艺设计及数值模拟[D]. 长春：吉林大学, 2013.

Zhang C H. Process Design and Numerical Simulation of Hot Extrusion Forming for Deep Hole Parts[D]. Changchun: Jilin University,2013.

[11]陈文琳,朱玉生,聂会星，等. 半轴套管热挤压成形工艺数值模拟[J]. 农业机械学报,2006,(11):153-156.

Chen W L,Zhu Y S,Nie H X,et al. Numerical simulation on hot extrusion process of half shaft bushing[J].Transactions of the Chinese Society for Agricultural Machinery, 2006,（11):153-156.

[12]陈丽军. 基于DEFORM的整体半轴套管挤压工艺实验研究[J]. 佳木斯大学学报:自然科学版, 2009,(3):35-37.

Chen L J. Experimental research of extrusion techniques for totally axle shaft sleeve based on deform[J].Journal of Jiamusi University:Natural Science Edition, 2009,（3):35-37.

服务与反馈：

【文章下载】【加入收藏】